Melissa Joan Hart has revealed she used to take ecstasy, 'magic' mushrooms and marijuana.

The 37-year-old actress - who shot to fame as the titular character in 'Sabrina the Teenage Witch' in 1996 - had several drug-fuelled nights over an 18-month period and recalls one occasion when she took ecstasy at Hugh Hefner's Playboy Mansion in 1999 and kissed a girl during the limo ride home.

Speaking to Life & Style magazine about her new tell-all book 'Melissa Explains it All', the blonde beauty - who has three sons, Mason, seven, Brady, five, and 12-month-old Tucker with her husband Mark Wilkerson - said: ''I experimented with weed, ecstasy, mushrooms and mescaline for about a year and a half.''

In the book the former child star claims Paris Hilton once offered her cocaine - an allegation the 32-year-old heiress' representatives deny - but she turned down the offer.

The former child star insists her experimenting never led to addiction and she eventually realised she needed to find a new group of friends, but not before once turning up to a Maxim magazine photo shoot while still high on ecstasy.

She said: ''That was my third or fourth time on ecstasy.

''I was kind of running with a bad crowd. I just didn't enjoy taking drugs. I don't like the loss of control.''

Melissa - who also appeared in the titular role in teen sitcom 'Clarissa Explains it All' - also recalls several stars she kissed including Backstreet Boys singer Nick Carter and 'Scary Movie 5' star Jerry O'connell, who she refers to as a ''man-w***e''.

But she has no love lost for Ashton Kutcher and admits trying to get him booted out of her parties for making ''smartass remarks''.

She said: ''Ashton and I just didn't get along.''